George spiehlman



'TO dtLL WHOM IT MAY CONCERN;

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IMPROVEMENT IN PLOUGHSt fl'tlgc i fitlgchnl'ettfutet in in its: Ztrttas152mm mu mating part at the smut.

Be it known that I, GEORQE SPIEHLMAN, ofStrasburg, in the county ofLancaster, and State of Pennsylvania, have invented a combination ofcertain new and useful Improvements on the Common Plough; and I dohereby declare that the following is a full, clear, and exactdescription of the constructionand operation of the same, referencebeing had to the accompanying drawings, making a part of thisspeeificatlon, in which- Figure 1 is a perspective view of one side ofthe plough, and

Figure 2 the land-side of the same, or its opposite side.

Figure 3 shows the bottom of the plough and combined parts.

Figure 4, the head of the standard, with its slot and thumb-screw, bolt,and washer.

Figure 5, the jointed connection pieces for the beam and handle.

Figure 6, a diagram of the mould-board, illustrating the curves in thelines of direction.

The object of my invention is to perfect the kind of. ploughs mostly infavor, and having devoted special attentionto this branch of business,as my father beforeme, I have, as I verily believe, obviated formerdefects and added new and important improvements, some of which, inkind, may be found on other plonghs, but of a difi'erent constructionand arrangement, and not meeting the object I have in view To enableothers skilled in the art to make and usemy invention, I will proceed todescribe the construction and operation of the parts. a

Theplough-b-eamA-';has a graceful curve, and rests upon an enlargedstandard, B, with a flattened head, b v in which there is a slot, curvedto the radius of the hinged pivot that unites the beam to the handle,for the purpose of adjusting the draught to give the plough more or lessland, held in place by a bolt, 0, with awasher,- Q, and thumb-screw P;The beam is terminated by a plate or cap, M, having a flat side for abolt. Its counterpart N is aflixed to the handle of the plough on thelandside, forming the joint connection J of the united pieces, held by aheaded bolt and screw, 0. The bottom of the land-side'has a separatesole, G, which is held by screwbolts, and can be replaced when worn out.The toe or point E has a flange under the share F, which has acorresponding shoulder, against which the flange slides. There is also aslotted wedge, K, beneath the inner prolonged end of the toe-piece orpoint E, which has this portion depressed, and a hole for a headed bolt,0, which enters-the slot is in the wedge K, and is held by a nut, sothat when the point is worn, or in order to depress the point, theslotted wedge gives a facility to adjust the same from time to time. Ialso apply a separate heelpiece, I, beneath. the rear lower corner ofthe mould-hoard, where the friction is the greatest, so that when wornoutit can also be replaced. a a

As regards the peculiar make and curve of the mould-board D, fig. 6, Imay be allowed to state the fact that I only obtained it after havingnine separate castings made from improved models-made by successivetrials on the ploughmarking the points where the friction indicated theresistance of the soil, until the shape and curves were such as to turnthe soil with the greatest ease, thereby lightening the draught-on thehorse and lessening the wear of the mould-board fifty per cent., andbrought to a degree'of perfection never before attained. The diagramshows the. relative curvatures by the dotted lines traced with blue inthe direction across the same at various points, shown by the straightlines Y, U, V, W, and X. The curves are shown y?! a 'v, w, n w- Nor canI, by words, make the matter any clearer than the actual proportions,given by exact measuremerit, reduced as shown.

Taking all the improvements connectedly, I am satisfied that theyconduce to greater perfection in this useful implement than any hithertoin use; but I am also aware of the immense number of-improvements madeand patented, in which the beam is made adjustable vertically andlaterally, extra pieces to the mould-board and land-side, claims ofsuperiority in the construction and form of the mould-board, so that,while I also know that. they 'difl'er, intheir construction andarrangement, from my device or devices, to overcome the difiiculty in sowording my claims as to show the distinctive feature by the claimds notso easy, as the actual utility of the ch'snge is manifestlysubstantially difierent'in eli'ect. I'am not aware, however, that aslotted wedge was ever used so as to depress the point in the mannerspecified, nor of a heel-piece below the mould-board, nor my modeofhingingthebeam and manner of adjusting it on the slotted standard, nora sole-piece applie to the base of the land-side, in the man-her shown.I also deem the shape and curvature of my mould-board f the greatestutility, and hovel in its .form and construction. I i

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The construction of the flattened and enlarged head 6, with itscurved slot; of the standard B, in combination'with the application andarrangement of the hinge pieces M N, forming the joint J of the beam andhandle, when all made in the manner and for the purpose specified.

2. I claim the slotted wedge K, in combination with the flanged andsunken tail-piece of the point E, constructed in the manner and for thepurpose set forth.

3. I also claim the mode of constructing and applying the sole-piece G,by ears and bolts, to the base of the land-side, arranged as shown, forthe purpose specified.

4. I also claim the extra heel-piece I, in combination with themould-hoard D, when made and arranged in the manner set forth.

5. I claim the combination and arrangement of the hinged beam A, withthe handle a, the sole-piece G, heel I, wedge K, flanged point E, andmould-board D, when all are made and arranged in the manner shown,

for the purpose specified.

GEORGE SPIEHLMAN.

Witnesses:

Josnrn B. SMITH, JAeoB HILDEBRAND.

